To our knowledge, this product has not been tested in Zebrafish. Alignment of the immunogen sequence to D.rerio E74-like factor-2 (Sequence ID:NP954689.1) shows an identity score of 79% with positives 85%. The latter part of the protein has great homology. While we have not yet mapped the epitope, if this is within the later 2/3, we would expect reaction.